Concrete building block



L.. L. MIXON.

CONCRETE BUILDING BLpCK. APPLICATION FILED mAYls. 1920.

1,412,666., Patented Apr. 11, 1922.

UNHTED TATES earner LOUIS LEON MIXON, OF TULSA, OKLAHOMA, 'ASSIGNOR, DIRECT AND MESNE ASSIGNMENTS, OF THREE-EIGHTI-IS TO B. A. STEWAED, OF TULSA. COUNTY, OKLAHOMA, AND ONE-FOURTH TO GEORGE A. CAIRNS, OF TULSA, OKLAHOMA.

' CONCRETE BUILDING BLUCK.

aiaee To all whom it may concern:

Be it known that I, LoUIs LEON MIXON, a citizen of the United States, residing at Tulsa, in the county of Tulsa and State of Oklahoma, have invented certain new and useful Improvements in Concrete Building Blocks, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved concrete block wall construction. and partlcularly to an especially constructed block for forming the wall and an object of the inven tion is to provide a block poured out l'lOIlzontally from the ends instead of %erpendicularly from the top and bottom. y this construction a larger top and bottom surface on the block for the mortar which binds the blocks together is furnished, thereby giving greater strength to the wall with the use of less material.

Another object is to provide an article of manufacture of this kind having notches or recesses in the top and bottom faces adjacent the ends of the bloclc in order to provide hand holds for the workman so that the block may be placed with greater ease and rapidity.

Still another object is to provide a block which is cored out from the opposite ends toward the center, and having a divisional wall substantially centrally of the block in order to reinforce the same The material for binding the blocks together extends partly into the recess or notches and acts to hold the blocks against displacement, thereby insuring a greater binding between the blocks in constructing a wall.

Furthermore, the cored out portions of the block provide dead air spaces and also afford means to lighten the block.

While the design and construction at present illustrated and set forth is deemed preferable, it is obvious that as a result of a reduction of the invention to a more practi' cal form for commercial purposes, the invention may be suspectible to changes, and the right to these changes is claimed, provided they are comprehended within the scope of what is claimed.

The invention comprises further features and combination of parts as will be hereinafter set forth, shown in the drawings and claimed.

Specification of Letters Patent. Pgttentfid Apt, llll, 19.22. Application filed May 15,

1920. Serial No. 381,681.

In the drawings Figure 1 is a perspective view of a portion of a wall showing the same constructed from Blocks embodying the features of the invenion;

Figure 2 is a longitudinal horizontal sectional view through one of the blocks on line 22 of Figure 1;

Figure 3 is a longitudinal section taken at right angles to the section in Figure 2.

Referring to the drawings, 1 designates a wall which is constructed from a plurality of building blocks each being constructed in accordance with the invention. Each block may be any suitable proportion, shape or configuration, preferably rectangular as shown, and is cored out from end to end toward the center of the block, thereby constructing elongated cavities 2 forming dead air spaces in the construction of a building wall. The cavities 2 of the block taper toward and terminate adjacent the center of the block so as to provide a divisional wall or partition 4: which acts to strengthen and reinforce the block, particularly in view of the arched connection of the partition 4 with the sides, top and bottom thereof. The upper and lower walls of the block at both ends are provided with notches or recesses 5 which constitute hand grips or holes to facilitate the handling of the block by the workman in constructing a wall as shown in the drawings. In other words, the notches or recesses may be engaged by the hands of the workman in placing the block in position on the wall. For instance, the hand of the workman can so engage the notches or recesses that the fingers may extend into the cavities of the block and thumb adjacent to and partly upon the upper surface of the block, and in this way, the block may be placed very close to the block previously positioned on the wall, owing to the fact that the notch or recess of the block which is being placed will register with the recess or notch of the block previously disposed. Heretofore the workman in placing blocks upon a wall was required to remove the hands before the blocks are correctly positioned and then use a pushing force to arrange the block in an accurate position. With the blocks of this construction the workman can retain his hands in engagement with the block until correctly placed.

posite ends toward the center, and having a divisional wall connecting the adjacent'ends of the hollowed out portions, the walls of said block increasing in thickness toward the divisional wall thereof, the connecting of the block walls with such divisional wall being in the form of an arch.

In testimony whereof I hereuntoaflixmy signature.

LOUIS LEON, MIXON. 

